Turbo Upgrade

[powizzle]

Hey guys,

I'm thinking of upgrading the factory turbo to a bigger unit. I was looking at the GT2871r 52t (aka GTRS) as it seems to be a direct bolt on.

Are there any other turbo setups that you guys could recommend (maybe 3071R)?

The car is daily driven, and i've been hitting up a few skidpan/drift events.

I'd ideally like to keep the engine internals standard, and would be looking to upgrade the bare essentials (ie, fuel pump, nistune)

At the moment, i'm running:
FMIC
Turbo Back exhaust w/ HKS Hipower Silent
Blitz I-Color EBC
Arc Induction Box

At the moment, the car feels awesome, however it wouldn't hurt to get more power!

 

[JapanS15]

perhaps get bigger injectors, aftermarket fuel pump, some sort of EMS followed by a tune and you will be set!

 

[powizzle]

Yeah that definately is the plan, do I need to run a z32 afm?

I guess i'm after the biggest turbo the stock motor will take (no cams) that will make decent reliable power

 

[JapanS15]

I would run a Z32 MAF if I were going with a bigger/biggest turbo for the motor.

 

[haz's S15R]

Z32 MAF, 740cc Injectors and GT2871R turbo on stock internals and no cams with re-tune => 350+BHP
gotta get these!!! :nod:
http://www.frsport.com/Tomei-173020-M8270-ARMS-Turbo-Kit-SR20DET-S13-S14-S15_p_17087.html
http://www.frsport.com/Tomei-193023-740cc-Fuel-Injector-Set-for-SR20DET-KA24DE_p_1165.html
http://www.frsport.com/Nissan-2268030P00-300ZX-Z32-Mass-Airflow-Sensor-MAF-MAFS---USED_p_1250.html

 

[JapanS15]

how much is considered SAFE boost for the stock motor with said upgrades?

 

[Hypnotik]

1.32 bar... Safe for me on a TD06-20G, lol.

Really though you can't say a certain boost pressure is safe, it's about cylinder pressure. So basically it all depends on your tune. Most people say 400whp is the limit of the stock motor.

 

[haz's S15R]

I'm running 1.6 bar, but as Hypnotik says it all down to tune... and 400whp seems about right - i've heard 450bhp at the fly which is much the same!

 

[Hypnotik]

In a SR your biggest enemies are knock and heat.

 

[Auss15]

In a SR your biggest enemies are knock and heat.

And rocker arms

 

[powizzle]

So basically,

Z32, 740s, fuel pump, GOOD tune, 2871R/t518z and maybe oil cooler/radiator/thermostat and rocker arm stoppers?

 

[Auss15]

Yep, thats pretty much it.
Then you might want to think about brake upgrade and the future strength of the stock gearbox

 

[powizzle]

Thanks, any idea how much i'd expect to make with a 2871R or t518z?

I was planning to run braided brake lines, slotted rotors and better pads.

 

[Fasthands]

2860rs disco potato with 740's and a few other upgrades I am getting 350-360 bhp on stock internals and 1.4 bar. check out my build thread in owners rides.. I have added lots of other stuff, but as a turbo = power output idea it may help you decide.. and no lag!!

 

[powizzle]

Thanks for that!

It's so tempting to go and open the head, and you find very quickly your small shopping list becomes very big.

 

[Sair]

sooooooooo it means we can also put t67 or gt3071 on stock internals with other compulsary tools like inj..... bla bla